AWS BAg-28 vs. ASTM A229 Spring Steel
AWS BAg-28 belongs to the otherwise unclassified metals classification, while ASTM A229 spring steel belongs to the iron alloys. There are 17 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.
For each property being compared, the top bar is AWS BAg-28 and the bottom bar is ASTM A229 spring steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 88 | |
| 190 |
| Poisson's Ratio | 0.33 | |
| 0.29 |
| Shear Modulus, GPa | 33 | |
| 72 |
| Tensile Strength: Ultimate (UTS), MPa | 150 | |
| 1690 to 1890 |
Thermal Properties
| Latent Heat of Fusion, J/g | 140 | |
| 250 |
| Melting Completion (Liquidus), °C | 710 | |
| 1450 |
| Melting Onset (Solidus), °C | 650 | |
| 1410 |
| Specific Heat Capacity, J/kg-K | 320 | |
| 470 |
| Thermal Expansion, µm/m-K | 21 | |
| 12 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 40 | |
| 1.4 |
| Embodied Energy, MJ/kg | 630 | |
| 19 |
Common Calculations
| Stiffness to Weight: Axial, points | 5.6 | |
| 13 |
| Stiffness to Weight: Bending, points | 17 | |
| 24 |
| Strength to Weight: Axial, points | 4.7 | |
| 60 to 67 |
| Strength to Weight: Bending, points | 7.1 | |
| 40 to 43 |
| Thermal Shock Resistance, points | 5.8 | |
| 54 to 60 |
Alloy Composition
| Carbon (C), % | 0 | |
| 0.55 to 0.85 |
| Copper (Cu), % | 29 to 31 | |
| 0 |
| Iron (Fe), % | 0 | |
| 97.5 to 99 |
| Manganese (Mn), % | 0 | |
| 0.3 to 1.2 |
| Phosphorus (P), % | 0 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 | |
| 0.15 to 0.35 |
| Silver (Ag), % | 39 to 41 | |
| 0 |
| Sulfur (S), % | 0 | |
| 0 to 0.050 |
| Tin (Sn), % | 1.5 to 2.5 | |
| 0 |
| Zinc (Zn), % | 26 to 30 | |
| 0 |
| Residuals, % | 0 to 0.15 | |
| 0 |